Final answer:
The distance between fire fighters in a safety zone and the flames should be a minimum of three times the flame height to ensure their safety.
Step-by-step explanation:
The distance between fire fighters in a safety zone and the flames should be a minimum of three times the flame height.
This is a safety precaution to reduce the risk of injury to the fire fighters. The heat generated by the flames can be intense, and being too close can lead to burns or heat exhaustion. Keeping a distance of three times the flame height provides a buffer zone that allows the fire fighters to work safely.
For example, if the flame height is 5 feet, then the minimum distance between the fire fighters and the flames should be 3 times 5 feet, which is 15 feet.